Cannot connect to My Cloud after switching ISP

Hi, I recently changed from Comcast/Xfinity to CenturyLink Fiber. With the new router, I cannot access My Cloud. It seems that my new router is not seeing MyCloud. The MyCloud is connected to the router; the blue light in front is solid, and the green light in back is also solid.

I do not know what to do next. I found a few posts on here that described a similar issue, but the solutions provided were not helpful or relevant. I still have the Comcast modem, so should I use that to access MyCloud, and “reset” stuff?

Please advise, and thank you.